
class Father {
  String name = "";
  int age = 0;
  String _job = "";
  Father(String name, num age, String job)
    : this.name = 'father',
      this.age = 0,
      this._job = "割草";
  say() {
    print('我是: ${this.name}, 我现在${age}岁了, 我的工作是${_job}');
  }
}
